Phys. Rev. B 70, 174409 (2004) [14 pages]Semiclassical dynamics of domain walls in the one-dimensional Ising ferromagnet in a transverse fieldReceived 7 April 2004; published 10 November 2004 We investigate analytically and numerically the dynamics of domain walls in a spin chain with ferromagnetic Ising interaction and subject to an external magnetic field perpendicular to the easy magnetization axis (transverse field Ising model). The analytical results obtained within the continuum approximation and numerical simulations performed for the discrete classical model are used to analyze the quantum properties of domain walls using the semiclassical approximation. We show that the domain wall spectrum shows a band structure consisting of 2S nonintersecting zones. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.70.174409
DOI:
10.1103/PhysRevB.70.174409
PACS:
75.10.Jm, 75.40.Cx, 75.40.Gb
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.